Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > Develop batch applications > Develop batch applications > Use the batch data stream (BDS) framework

Implement the generic batch step (GenericXDBatchStep)

A generic batch step works with one input and one output stream. This step during each iteration of the batch loop reads a single entry from the BDS Input Stream passes it to the BatchRecordProcessor for processing. The BatchRecordProcessor returns the processed data which is then passed to the BDS output stream.

Use the following properties to implement the generic batch step.

Required properties. The table includes the property name, property value, and property description.

Property name	Value	Description
BATCHRECORDPROCESSOR	Java class name	Class implementing the BatchRecordProcessor interface

Optional properties. The table includes the property name, property value, and property description.

Property	Value	Description
debug	true or false (default is false)	Enable tracing and debugging on the step
EnablePerformanceMeasurement	true or false (default is false)	Measure time spent within the step

Procedure

1. Implement the interfacecom.ibm.websphere.batch.devframework.steps.technologyadapters.BatchRecordProcessor to provide the business logic for the step. In the xJCL for the step, declare a property BATCHRECORDPROCESSOR with the value set to the implementation of the interface. For example:

   ...
   
   <props>   
   
   <prop name="BATCHRECORDPROCESSOR"
       value="com.ibm.websphere.batch.samples.tests.steps.InfrastructureVerificationTest"/>
   </props> ...
   

2. Set the BDS input stream logical name to inputStream and a BDS output stream logical name to outputStream. The logical names are declared in the xJCL. For example:

   <batch-data-streams>
   
   <bds>
   <logical-name>inputStream
   </logical-name>
   <props>         ....
   
   </bds>
   <bds>
   <logical-name>outputStream
   </logical-name>
   <props>  ...
   
   </bds>
   </batch-data-streams> 

3. While using the BatchPackager for packaging, the application for the job step class, jobstepclass, must be set to com.ibm.websphere.batch.devframework.steps.technologyadapters.GenericXDBatchStep. For example:

   ejbname.1=IVTStep1
   jndiname.1=ejb/GenericXDBatchStep
   jobstepclass.1=com.ibm.websphere.batch.devframework.steps.technologyadapters.GenericXDBatchStep
   

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